Suction cylinder mold for paper making machines



28, 1933- 1'. 1.. FORM-MN! SUCTION CYLINDER HOLD FOR PAPER MAKINGMACHINES s Sheet-Sheet 1 VIIIIIIIIIIIIIIIII/A VIII/I meodarezfr irmdrzb'INVENTOR ATTOR N EYS T. L. FORMAINI SUCTION CYLINDER MOLD FOR PAPERMAKING MACHINES 1932 s Shee ts-Sheet -2 Filed Oct. 18

madomfifzrmm ATTORNEYS Nov. 28, 1933. T. L. FORMAINI sucnon CYLINDER-nbw FOR PAPER MAKING-MACHINES 1932 :s Sheets-Sheet 5 Filed Oct. 18

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ATTORNEYS Patented Nov. 1933 UNITED STATES- PATENT OFFICE sUc'rIoNCYLINDER Mom FOR PAPER MAKING MACHINES 2 Claim.

This invention relates to paper making machines, and more particularlyto a cylinder mold on which the stock is collected in the formation ofthe web of the paper, and has for the primary object the provision of acylinder mold so constructed and operating in conjunction with a couchroll and having a suction means arranged therein and opposite to thecouch roll so that the web of paper when formed will be free of defects1 and permits any quality of paper to be made with increased tonnageover that produced by the conventional type of paper making machine.

With these and other objects in view this invention consists in certainnovel features of construction, combination and arrangement of parts tobe hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had tothe following description and accompanying drawings, in which Figure 1is a sectional view illustrating a suction cylinder mold mounted in avat and constructed in accordance with my invention.

Figure 2 is a transverse sectional view illustrating the cylinder moldand couch roll associated therewith.

Figure 3 is a perspective view illustrating one of the ribs of thecylinder mold.

Figure 4 is 'a detail end view illustrating the means of adjusting thelocation of the suction box within the cylinder mold.

Figure 5 is a detail sectional view illustrating a coupling for thevacuum pipe of the suction box .Q:

Figure 6 is a perspective view illustrating a covering for the couchroll.

Figure '7 is a diagrammatical view illustrating my invention associatedwith a vat and various types of rolls and a conveyor.

Referring in detail to the drawings, the numeral 1 indicates a vat toreceive the water and stock from which the paper is formed and haslocated therein a cylinder mold 2 constructed in accordance with thepresent invention. Standards 3, having bearings 4 rotatably support the.cylinder mold partially within the vat, as shown in Figure 7, byrotatably receiving the journals 5 of the mold. One of the journals 5 isof hollow formation to permit water to escape from the interior of themold to a trough 6 associated with the usual fan pump for maintainingthe water in circulation. The last referred to journal 5 carries a wormgear 7 meshing with a worm 8 of a power shaft 9 for the purpose ofimparting 55 rotation to the cylinder mold.

The mold 2 includes end heads 10 secured to the journals 5 and havemounted thereon a cylindrical shell 11 provided with rows of openings12. Annular retaining members 13 are carried by the heads f0 and projectbeyond the shell 11 and have positioned therebetween relatively spacedribs 14, the latter secured to the retaining members 13 by fasteners 15.The openings 12 'of the shell 11 are arranged in parallel rows with onerow disposed between each pair of ribs, the ribs having seatingengagement with the periphery of the shell 11, also being slightlycurved to conform to the contour of the shell. The ribs 14 are ofsubstantially triangular shape in cross section, each rib having astraight face disposed 7 opposite to an inclined face of the adjacentrib so that the passage formed by a pair of ribs will converge towardsthe respective row of openings of the shell. The outer edges of the ribsare provided with notches 16 to receive annular sup- 7 porting bands orwires 17 on which is mounted an .outer shell 18 of wire mesh and onwhich the stock accumulates during the rotation of the mold in the vat1.

'A suction box 19 is located within the cylinder mold and is'yieldablysupported in engagement with the inner surface of the shell 11 and hasconnected thereto a vacuum tube, 20 extending through the hollow journal5 of the mold, and is equipped with a coupling 21 for the purpose ofconnecting the tube 20 to a vacuum suction pipe 22. The coupling is ofthe adjustable type as shown in Figure 5 and will permit the tube 20 toturn slightly relative to the suction pipe 22 during the adjustment ofthe box within the cylinder mold. The suction box is carried by arms 23having supporting portions 24 received in the journals 5. The arms 23are of telescopic construction, the sections of which have interposedtherebetween coil springs 25 to normally urge the suction box tightlyagainst the shell 11. The suction box underlies several rows of openings12 and is provided with flanged portions 26 for closing certain of therows of openings which are adjacent to the rows of openings being actedupon by the suction within the box. a One of the heads 10 is providedwith spaced slots 27 to admit the water to the interior of the cylindermold from the vat and is also provided with a man-opening 28 for thepurpose of permitting adjustments or repairs to be easily carried outupon the interior of the cylinder mold.

One of the supporting portions 24 is provided with a lever 29 having itsfree end positioned between adjusting bolts 30 carried by one of the 110standards 3, whereby the position of the suction box may be slightlyvaried in either direction. This construction also against rotation withthe cylinder mold.

A couch roll 31 is located directly above the suction box and contactswith the outer shell 18. A removable cover 32 is provided for the couchroll and preferably constructed from felt. The stock accumulating on theouter shell 18, when engaged by the couch roll, will be pressed and atthe same time acted upon by suction from the box 19, removing the waterfrom the web of the paper. The web of the paper passes from the cylindermold onto an endless apron 33, as shown in Figure 7, and thence betweena press roll 34 and a suction roll 35. The web or paper passes from therolls 34 and 35 to press rolls 36 by the conveyor and thence to otherparts of the machine for finishing. The suction rolls and press rollsremove the surplus water from the web of the,

paper so that when the paper is finally completed it will be free ofdefects. The-lowermost press roll has disposed thereon a box 3'1 forcatching water therefrom, while the uppermost press roll 36 is engagedby a conventional type of doctor 38. The press roll 34 as well as thecouch roll are engaged by doctors.

The conveyor 33 travels over guide pulleys 339 and a suction box forremoving surplus water therefrom. The conveyor may be sprayed prior toreaching the suction box, as shown at 41, and also acted upon by aconventional type of wiper 42.

While I have shown and described the preferred embodiment of myinvention, it will be understood that minor changes in construction,combination and arrangement of parts may be made without departing fromthe spirit and scope of my invention, as claimed.

maintainsthe suction box,

Having described the invention, I claim:

1. A suction cylinder mold for paper making machines comprisingsupporting journals, sleeves rotatably supported by the journals,cylinder heads secured to the sleeves, means to deliver power to one ofsaidsleeves, a perforated inner shell carried by said heads, annularflanges secured to the heads and projecting beyond the she11,'spacedribs carried by said flanges and engaging the shell with theperforations arranged therebetween, spaced bands mounted on the ribs, anouter foraminous shell carried by the bands and flanges, and a suctionbox mounted to said sleeves and engagingthe inner shell.

2. A suction cylinder mold for paper making machines comprisingsupporting journals, sleeves rotatably supported by the journals,cylinder heads secured to the sleeves, means to deliver power to one of.said sleeves, a perforated inner shell carried by said heads, annularflanges secured to the heads and projecting beyond the shell, spacedribscarried by said flanges and engaging the shell with the perforationsarranged therebetween, spaced bands mounted on the ribs, an outerforaminous shell carried by the bands and flanges, supporting membersjournaled in said sleeves and one of said members of hollow formation,arms carried by said members and including telescopic sections, springsbetween the sections of said arms, a suction box carried by the arms andurged into engagement with the inner shell by said springs, and asuction tube extending through the hollow member and connected to thesuction box.

THEODORE L.

